By Stacy Lambe Apple TV+ It’s Always Sunny in Philadelphia, is back on TV with Mythic Quest, another acclaimed series he created and also stars in. Ahead of its return to Apple TV+ on May 7, McElhenney opened up to ET about what keeps him and the rest of the creative forces on It’s Always Sunny coming back after so many seasons and how Mythic Quest fills the current void for workplace comedies. Easily one the best original series on Apple TV+, Mythic Quest made a strong debut in February 2020 with its salty sense of humor about the video game world. At the center of it is McElhenney's Ian Grimm (that’s Ian with a hard I), a creative director and egomaniac who often clashes with co-workers, including executive producer David Brittlesbee (David Hornsby), head of monetization Brad Bakshi (Danny Pudi), and lead engineer Poppy Li (Charlotte Nicdao).